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CVE-2026-23837— MyTube has an Authorization Bypass vulnerability

Quick assessment

Affected
franklioxygen MyTube
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MyTube是Peifan Li个人开发者的一个视频自托管下载器和播放器。 MyTube 1.7.66之前版本存在安全漏洞，该漏洞源于roleBasedAuthMiddleware身份验证检查可被绕过，可能导致未经验证的用户访问和修改应用设置及受保护路由。

CVSS 9.8 · Critical EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-23837

Vulnerability Information
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Vulnerability Title
MyTube has an Authorization Bypass vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
MyTube is a self-hosted downloader and player for several video websites. A vulnerability present in version 1.7.65 and poetntially earlier versions allows unauthenticated users to bypass the mandatory authentication check in the roleBasedAuthMiddleware. By simply not providing an authentication cookie (making req.user undefined), a request is incorrectly passed through to downstream handlers. All users running MyTube with loginEnabled: true are impacted. This flaw allows an attacker to access and modify application settings via /api/settings, change administrative and visitor passwords, and access other protected routes that rely on this specific middleware. The problem is patched in v1.7.66. MyTube maintainers recommend all users upgrade to at least version v1.7.64 immediately to secure their instances. The fix ensures that the middleware explicitly blocks requests if a user is not authenticated, rather than defaulting to next(). Those who cannot upgrade immediately can mitigate risk by restricting network access by usi a firewall or reverse proxy (like Nginx) to restrict access to the /api/ endpoints to trusted IP addresses only or, if they are comfortable editing the source code, manually patch by locating roleBasedAuthMiddleware and ensuring that the logic defaults to an error (401 Unauthorized) when req.user is undefined, instead of calling next().
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
MyTube 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MyTube是Peifan Li个人开发者的一个视频自托管下载器和播放器。 MyTube 1.7.66之前版本存在安全漏洞，该漏洞源于roleBasedAuthMiddleware身份验证检查可被绕过，可能导致未经验证的用户访问和修改应用设置及受保护路由。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
franklioxygen MyTube < 1.7.66 -

II. Public POCs for CVE-2026-23837

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III. Intelligence Information for CVE-2026-23837

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Vendor Advisories for CVE-2026-23837 (1)

IV. Related Vulnerabilities

Same product: MyTube
Same vendor: franklioxygen
Same weakness: CWE-863

V. Comments for CVE-2026-23837

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